* {
    box-sizing: border-box;
}

body a:hover {
    text-decoration: none;
}

body a {
    color: white;
}

.first {

    height: 640px;
    background: url(../../imgs/index5.png);
    background-size: 100% 100%;
}

#index {
    /* margin-top: -640px; */
    height: 80px;
    background: none;
    padding: 20px 10px;
    font-size: 16px;
    border: 0px;
    color: white;
}

#index ul li a {
    color: white;
}

#index ul li a:hover {
    color: red;
}





.index1 {
    margin-left: 40px;
    margin-top: -45px;
    font-size: 35px;
    /* background:white; */

}

.index2 {
    margin-left: 50px;
}



.first21 {

    width: 200px;
    height: 60px;
    margin-top: 80px;
    margin-left: 15%;
    background-color: white;
}

.first22 {
    border: 1px solid white;
    width: 200px;
    height: 60px;
    margin-top: -60px;
    margin-left: 32%;
    /* background-color: red; */
    padding-top: 15px;
}

.first5 {
    width: 100%;
    height: 400px;
    background: url(../../imgs/index5.png);
    opacity: 0.9;

}


.f9 {
    width: 100%;
    height: 600px;
    background: url(../../imgs/index5.png);
    opacity: 0.9;

}

.foot ul li {
    margin: 20px;
    display: block;
    float: left;
    list-style: center;

}

.first32 img {
    width: 70px;
    height: 70px;
}

.first32 img:hover {
    width: 80px;
    height: 80px;
}

#first41 {
    background: url(../../imgs/index123.jpg );
    background-size: 300px 300px;
    /* opacity:0.7;
z-index: -1 */

}

#first42 {
    background: url(../../imgs/index124.jpg );
    background-size: 300px 300px;
    /* opacity:0.7; */

}

#first43 {
    background: url(../../imgs/index125.jpg );
    background-size: 300px 300px;
    /* opacity:0.7; */


}

#first4 {
    width: 100%;height:800px;margin-top:100px;
}

.first3 {
    width: 1000px;height:280px;margin-left:15%;background-color:white;margin-top:100px;
}

.first32 {
float: left;width:200px;height:200px;margin-left:30px;margin-top:30px;
}

.four5{
    width:350px;height:400px;margin-left:600px;margin-top:-300px;
}
.four51{

}
.four52{
    margin-top:30px;
}
#f5{border:1px solid grey;width:250px;height:40px;margin-top:70px;}